I have the same problem with karmic current as of today. No program crash, just those 2 error messages.
** (nm-applet:4527): WARNING **: Error in getting active connection 'Vpn' property: (19) Method "Get" with signature "ss" on interface "org.freedesktop.DBus.Properties" doesn't exist
** (nm-applet:4527): WARNING **: _nm_object_array_demarshal: couldn't create object for /org/freedesktop/NetworkManager/ActiveConnection/5
I have the same problem with karmic current as of today.
No program crash, just those 2 error messages.
** (nm-applet:4527): WARNING **: Error in getting active connection 'Vpn' property: (19) Method "Get" with signature "ss" on interface "org.freedeskto p.DBus. Properties" doesn't exist
** (nm-applet:4527): WARNING **: _nm_object_ array_demarshal : couldn't create object for /org/freedeskto p/NetworkManage r/ActiveConnect ion/5